<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=s, initial-scale=1.0">
    <title>Document</title>
</head>
<style>
    .btn{
        background:#dddddd;
        pointer-events:none;
        
    }
    
</style>
<body>
    <button class="btn" disabled="disabled" value="已禁用">
   点击事件
    </button>
</body>
</html>